CVE-2026-25731

HIGH

Calibre <9.2.0 - Code Injection

Title source: llm

Description

calibre is an e-book manager. Prior to 9.2.0, a Server-Side Template Injection (SSTI) vulnerability in Calibre's Templite templating engine allows arbitrary code execution when a user converts an ebook using a malicious custom template file via the --template-html or --template-html-index command-line options. This vulnerability is fixed in 9.2.0.

Exploits (2)

github WORKING POC 10 stars

by XiaomingX · pythonpoc

https://github.com/XiaomingX/data-cve-poc-py-v1/tree/main/2026/CVE-2026-25731

View Code ZIP pw:eip

nomisec WORKING POC 3 stars

by dxlerYT · poc

https://github.com/dxlerYT/CVE-2026-25731

View Code ZIP pw:eip

References (2)

[Patch] https://github.com/kovidgoyal/calibre/commit/f0649b27512e987b95fcab2e1e0a3bcdafc23379

[Exploit, Third Party Advisory] https://github.com/kovidgoyal/calibre/security/advisories/GHSA-xrh9-w7qx-3gcc

Scores

CVSS v3 7.8

EPSS 0.0001

EPSS Percentile 1.3%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE

CWE-1336

Status published

Products (1)

calibre-ebook/calibre < 9.2.0

Published Feb 06, 2026

Tracked Since Feb 18, 2026